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A randomized controlled trial of the effectiveness of exercise and/or alternating air mattress in the control of back pain after percutaneous transluminal coronary angioplasty
Scriver V, Crowe J, Wilkinson A, Meadowcroft C
Heart & Lung 1994 Jul-Aug;23(4):308-316
clinical trial
5/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

OBJECTIVE: To determine whether an alternating air mattress, a specifically designed exercise program, or both were effective in alleviating back pain in patients after percutaneous transluminal coronary angioplasty (PTCA). DESIGN: 2 by 2 factorial, randomized control trial. SETTING: Intermediate cardiac care unit in a Canadian regional cardiac referral center. SUBJECTS: The sample included 100 subjects, mean age 57.4 years, undergoing PTCA. INSTRUMENTS: 10 cm visual analog and Borg scales, both of which measured subjects' perception of pain. RESULTS: The combination of exercise and alternating air mattress is most effective in pain reduction (p = 0.012). CONCLUSION: The combination of exercise and alternating air mattress is more effective in alleviating back pain in patients after PTCA than conventional methods or exercise and alternating air mattress alone.

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